He promised me a life of peace

this is a synopsis i have for an isekai that i'm writing for webnovel. what do you think: I remember what he said. That day when I had suddenly died from a heart attack thanks to his incompetence. That angel went on his knees and damn near kissed my feet asking for forgivness. Said that I wasn't supposed to die, said he aimed it towards a man that stood next to me. He promised that in my next life i would hardly have to work. A life of a king. A life of peace. Yet here I am, covered in dirt and blood, fighting for a lord that couldn't care less if I died. But I won't. I was promised a life of peace and I won't rest until i have it.